Remove dead code, fix cvar argument type and add player name helper

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <[email protected]>

lib/cvars.py

@@ -4,6 +4,8 @@ Quake Live console variables (cvars) database
 Common cvars for autocomplete and fuzzy search
 """
 
+import re
+
 # Server configuration
 SERVER_CVARS = [
     'sv_hostname',
@@ -329,7 +331,7 @@ COMMAND_ARGUMENTS = {
         {'type': 'botname', 'required': True},
         {'type': 'skill', 'required': False},
         {'type': 'team', 'required': False},
-        {'type': 'msec delay number', 'required': False},  # msec delay
+        {'type': 'number', 'required': False},  # msec delay
         {'type': 'freetext', 'required': False},  # altname
     ],
     'removebot': [
@@ -541,7 +543,6 @@ def parse_signature(signature):
     Example:
     '<botname> [skill 1-5] [team]' -> ['<botname>', '[skill 1-5]', '[team]']
     """
-    import re
     # Match <arg> or [arg] patterns, including content with spaces
     pattern = r'(<[^>]+>|\[[^\]]+\])'
     args = re.findall(pattern, signature)